Block system for railroads.



W. L, HUMMEL. BLOCK SYSTEM FOB EALROADS.

AYPLIGATLON FILED D110. L 1910.

Patented June 30, 19M

LLeJJeJ s @FEiG-E.

wirinmnrl L' "a-UMMEL, or @Hannan NEBRASKA.

.Sys'risiir ron 'animatie Specification cfiLe'tters Patent. .'Patente'dJune 30 1m31 ole-Qq 'st erfct-Contijol. nd.i h

accidente. ena." lvlthef arrangement anfffcombinatio'n of partsandtliesi-mp1yicity; and novelty,'oLconstriic-v` tion, as will behereinafter; described and pointed out in theclaiml f I vhaveillustrated rn` inven ion 'inthe accompanying drawing in which;

Figure 1 is a side view of a part of a semaphore mechanism, a art of atrack and side rail intheposition ot) open circuit and closed block, theside rail being elevated in connec. tion with which my invention may beused. Fig. 2 is an enlarged view in side elevation of part of themechanism for the opera'tion ,of a s ema hore, a part of the casing-ofthe ratchet w ieel, a part of the cam wheel and part'of the worm wheelcasing being broken awa disclosing the worm wheel, rims,

rate et wheel and ratchet. Fig. 3 is'a sideV velevation of Fi 2. Fig. 4is a section on the line w-g/ o Fig. 2.

Referrinf to the illustration, in which like parts are resignated bysimilar figures of rference, 2 is a track rail. A rod 11 provides inpractice, for effecting connection with a semapliore-blade (not shown),the lower end of said rod being connected to the shaft 13. This shaft 13has one end rotatably mounted in the bracket 14 secured to the rail 2and the other in the cross bar 16 .i supported by the post and the leg1(`. This the engine of the train, as shown in a separate applicationfor patent on railway block I ems ier.. y

e invention consists ,in

yf'eem'fiiedby me @n april :13, 1909, serai umher A489727. Thefrail issimilarlyl supported throughoutits len'gtlibybraces '14* and armsv17". l

-.',1 `he bar 20-issecuredito thefshaft'l--and connected by a cable21'through 1a cou ling 21%' to the arm 22 of the cam wheel 23,wli1ieh,

L, .-'pperated by' the motor, 'restores 'the -semaphare normal positionaftewthef train pi'iseesout 'of the block, as Snow-described:

wheel is ifree 4iiponithe sli-R24 ,I iligs., 2 :andjj4 adaptedl torevolve in -a sup -poitingframe or casing33, supportedonan upright 2,5secured .to a brace 25 on' the iatforin llwliichis attachedto,l thesemapore postr. and. supported on Vlegs "16.. The cam wheel has three steps,the nel'mal`26, the Erst T28 and-i the second, 27. "-Eecnredf tothe'shaft 24 is a ratchet. wheei29'inclos'e in a casin' 30, which issecured' to thecam wheel 231m has an opening on one ed e and' isfr'ee'upon.

the shaft. The ratchet w ieel is engaged by a pawl v31,ipivotal1ysecuredi to the oasingg -a'ndheld to enga e the wheel by a spring 32,

the free end of t e pawl adapted to roject' v through the opening in thecasing. ecured to the shaft and within the casing 33 is aff' worm gear34 operated by aworm 35 which is turned by a motor 36". through aconnecting rod 37. Between the easings 30 and 33 and ad j ustablysecured tol the casing 33'is a fanshaped se'ment 38 havin alrim 39 proiecting over tie casing 30. is secured an adjustable rim 40 b means ofl,ithin this rim screw bolts 41 and 42 which passt rough the rim 39 andinto the rim Y40. The adjustable rim is adapted to engage the free endof the pawl as the cam wheel and casing 30 revolve together and torelease the pawl from the ratchet-wheel as the wheel and casing approachthe rim. A moving Contact finger 42* i is pivoted to the axis 43 securedto the supportV 44 on the casing 33, the opposite end of the finger, 45,formingpfan approximately right angle and the two parts being. sesaratedby insulation. The part 45 is provi ed with a roller 46 which works uponthe cam` wheel, and the part 42 is adapted for eontactwvith the points47* and 48 which are secured to the support 44 and protected byinsulation, the contact points being connected with a circuit includingthe semaphore,

ros

through wires 49 and 102 and a binding post 49. The wire is curled,somewhat in the forni of a spring, in order that the slack of the wiremay be taken up as the Hilger inovee back and forth; The same not'forming any 1 the casing 30 and 'cam V23, the cam driviianby thecasing, and the circuit throug l around to where the step 27 olf'thecamenthe' 'moving finger and contact points vis broken, the semaphorehaving been restored. The arm 22 is in the positionshown'and the freeend of the pawl 31' has .fust env aged the rim 40, starting to release te' rate et wheel and cam." The action of the semaphore mechanismthroughthe'cablle 21 pulls the' arm 22 down to a verticaL osition,Fig.VA 1, SOv thatthe awl is free of'tli 'engages t e ratchet lwheel.The cam isthus moved so thatfitS`I St Step. is brought under the roller46, moving the fmgerjto the point ll'i''and closing a circuit not shown.vThe action of the worm carries the-ratchet wheel gages the roller andmoves the nge'r'to contact 48, closing a diiferent circuit. Y As the..

cam is moved around until the rollerdrops el, rim and again the bar 20,which turns the -shaft 13, raising the rod 11 and restoring thesemaphore. l I wish in this application to .disclaim'for i off thestep.27,lthe arm and cable raise i this invention all rights orclaims'not pro -v l.

erly belonging-to this invention and alrea y made or hereafter made inthe separate ap-f' plication for patent above referred to. Havingdescribed my invention, what I` claim as new and desire'to v,securebyLetters Patent, is,- f

. 'In a4 ra11way,'the combination with a the track rails, a shaft,'acam'. wheel freely mounted thereupon, .a casing 'loosely mouht- A edupon vthe shaft'and operatively connected casing and engagin said:ratchet wheel,- a

motor geared tosai shaft,anfarm tosaid cam, and a exibleeomi'ection;be-`

tween said 4arm .and depres'sble lrail for rais- -l and lowering saidrail;

in' n testimony whereofjI have-signed my name to this. specification thepresenoe" of twot.subszribixigwltnesses.

Witnesses:y

" J. H. BURKE,

H C. GARDINER.

